[PATCH v6 1/3] net: Enhancements for dhcp option 209

- Enable option 209 by default - Set pxelinux_configfile to NULL to avoid potential double free - change hardcoded 209 to a define Signed-off-by: Sean Edmond --- Changes in v7: - Reword this commit Changes in v6: - Reword this commit Changes in v4: - rebase master and resolve conflicts - defa

[PATCH v6 1/3] net: Enhancements for dhcp option 209

- Enable option 209 by default - Set pxelinux_configfile to NULL to avoid potential double free - change hardcoced 209 to a define Signed-off-by: Sean Edmond --- Changes in v6: - Reword this commit Changes in v4: - rebase master and resolve conflicts - default y for BOOTP_PXE_DHCP_OPTION (feed